
public class GCRoots {
	static class UserBean {
		public Position position;
	}
	
	static class Position {
	}

	public static void main(String[] args) {
		UserBean bean = new UserBean();
		
		Position position = new Position();
		
		bean.position = position;
		
		position = null;
		
		System.out.println(bean.position);
		
		System.out.println(null == null);
	}
}
